Building a rocket stove doesn’t have to be hard, all it really takes is 4 concrete blocks at a cost of less than 6 bucks.
Pick up a few sticks, twigs and leaves, start the fire, and your really to cook. All the heat is funneled up through the block chambers, creating a massive amount of heat. The good thing about rocket stoves is they need very little fuel. Make sure your blocks are dry to prevent cracking. Do not over heat.
Video Source: desertsun02